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time: split get_timezone() into main function and zone1970.tab function

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This allows for adding another function to read from a different timezone
source, which is added in the next commit.
This commit is contained in:
Dan Streetman 2021-06-30 07:17:22 -04:00
parent 31097e2b99
commit 09a54a862b
1 changed files with 42 additions and 28 deletions
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22
src/basic/time-util.c
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@ -1262,7 +1262,7 @@ int parse_nsec(const char *t, nsec_t *nsec) {
return 0;
}
int get_timezones(char ***ret) {
static int get_timezones_from_zone1970_tab(char ***ret) {
_cleanup_fclose_ FILE *f = NULL;
_cleanup_strv_free_ char **zones = NULL;
int r;
@ -1270,7 +1270,9 @@ int get_timezones(char ***ret) {
assert(ret);
f = fopen("/usr/share/zoneinfo/zone1970.tab", "re");
if (f) {
if (!f)
return -errno;
for (;;) {
_cleanup_free_ char *line = NULL, *cc = NULL, *co = NULL, *tz = NULL;
@ -1296,8 +1298,20 @@ int get_timezones(char ***ret) {
if (r < 0)
return r;
}
} else if (errno != ENOENT)
return -errno;
*ret = TAKE_PTR(zones);
return 0;
}
int get_timezones(char ***ret) {
_cleanup_strv_free_ char **zones = NULL;
int r;
assert(ret);
r = get_timezones_from_zone1970_tab(&zones);
if (r < 0 && r != -ENOENT)
return r;
/* Always include UTC */
r = strv_extend(&zones, "UTC");